Answer:
n=-10/3
Step-by-step explanation:
"Twice the difference of a number n and seven is equal to four less than the product of five and the number n" translates into 2(n-7) = 5n - 4. To solve, isolate the variable n.
2(n-7) = 5n - 4
2n - 14 = 5n - 4
2n - 10 = 5n
-10 = 3n
-10/3 = n
Answer:
Part a)
Part b)
Step-by-step explanation:
Part a) Set up a proportion to show the relationship between the distance in miles and the size of the map
we know that
The scale on a map is equal to
That means
1 inch on a map represent a 15 miles in real life
Part b) How far apart are the cities in real life?
Let
x -----> the distance in real life
using proportion
Answer:
Step-by-step explanation:
We know that A and B are complementary angles. So, they must add up to 90°. As an equation:
Since we know their equations, substitute:
Solve for x. Combine like terms on the left:
Subtract 9 from both sides:
Divide both sides by 9:
So, the value of x is 9.
We want to find A. So, let's use the equation for A:
Substitute 9 for x:
Add:
So, the measure of A is 17°.
Answer:
70 miles
Step-by-step explanation:
If you work 7 miles from your home, we must consider that it would take double the amount of miles to get to work and back home.
So do the following,
- Multiply 7 x 2 to represent the total amount of miles you must ride to get to and from work.
7 x 2 = Y
- Then, multiply the product by 5 to represent the 5 days you go to work.
Y x 5= A
Work:
7 x 2 = 14
14 x 5 = 70
Y= 14 X= 70
PLS GIVE BRAINLIST IF THIS HELPED
300 miles / 5 Hrs = 60 MPH
60 MPH * 7 HR = 420 Miles